#1. To make the shrimp marinade, combine vegetable oil, garlic, lime juice, chili powder, cumin, paprika, cayenne and salt and pepper to taste. #2. Toss to coat shrimp evenly, and rest in refrigerator for about 20 minutes. #.3. While the shrimp marinates, in a small bowl, combine sour cream, mayonnaise, 1 tablespoon lime juice, chipotle-chili powder and garlic powder. #4. Add oil to a large non-stick skillet, over medium heat. Sauté shrimp until fully cooked on both sides, about 4 minutes. #5. To serve, fill warmed tortillas with shrimp, shredded cabbage, avocado, cilantro, red onions, mango, lime juice and chipotle crema. Enjoy!